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RT8011A

Richtek
Part Number RT8011A
Manufacturer Richtek
Description Synchronous Step-Down Regulator
Published Aug 23, 2008
Detailed Description RT8011/A 2A, 4MHz, Synchronous Step-Down Regulator General Description The RT8011/A is a high efficiency synchronous, st...
Datasheet PDF File RT8011A PDF File

RT8011A
RT8011A

Overview
RT8011/A 2A, 4MHz, Synchronous Step-Down Regulator General Description The RT8011/A is a high efficiency synchronous, step-down DC/DC converter.
Its input voltage range is from 2.
6V to 5.
5V and provides an adjustable regulated output voltage from 0.
8V to 5V while delivering up to 2A of output current.
The internal synchronous low on-resistance power www.
DataSheet4U.
com switches increase efficiency and eliminate the need for an external Schottky diode.
Switching frequency is set by an external resistor or can be synchronized to an external clock.
100% duty cycle provides low dropout operation extending battery life in portable systems.
Current mode operation with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors.
RT8011/A operation in forced continuous PWM Mode which minimizes ripple voltage and reduces the noise and RF interference.
100% duty cycle in Low Dropout Operation further maximize battery life.
Features z z z z z z z z High Efficiency : Up to 95% Low RDS(ON) Internal Switches : 110mΩ Programmable Frequency : 300kHz to 4MHz No Schottky Diode Required 0.
8V Reference Allows Low Output Voltage Forced Continuous Mode Operation Low Dropout Operation : 100% Duty Cycle Synchronizable Switching Frequency (For RT8011 Only) Power Good Output Voltage Monitor (For RT8011 Only) RoHS Compliant and 100% Lead (Pb)-Free z z Applications z z z z z z Ordering Information RT8011/A Package Type F : MSOP-10 (RT8011) QW : WDFN-10L 3x3 (RT8011) QW : WDFN-8E 3x3 (RT8011A) Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard) Without SYNC and PGOOD Function With SYNC and PGOOD Function Note : RichTek Pb-free and Green products are : Portable Instruments Battery-Powered Equipment Notebook Computers Distributed Power Systems IP Phones Digital Cameras Pin Configurations (TOP VIEW) SHDN/RT SYNC GND LX PGND 10 2 3 4 5 9 8 7 6 COMP FB PGOOD VDD PVDD MSOP...


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